Is pH of Greenhouse Soils Measured Adequately?

DOI HANDLE Open Access
  • Than Aye Aye
    Laboratory of Soils, Division of Soil Science and Plant Production, Department of Plant Resources, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University
  • Shoji Kazuyuki
    Laboratory of Soils, Division of Soil Science and Plant Production, Department of Plant Resources, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University
  • Mori Yuki
    Laboratory of Soils, Division of Soil Science and Plant Production, Department of Plant Resources, Faculty of Agriculture, Kyushu University
  • Fujitomi Shin-Ichi
    Fukuoka Agricultural Experimental Station
  • Wada Shin-Ichiro
    Laboratory of Soils, Division of Soil Science and Plant Production, Department of Plant Resources, Faculty of Agriculture, Kyushu University

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Abstract

We measured the soil pH on fourteen soil samples collected from greenhouses under intensive fertilizer application. All the soil samples contained carbonate, but the pH values measured by conventional method were too low in view of carbonate equilibrium. We examined the effect of the soil to water ratio, shaking time and standing time and found that the pH gradually increased as the standing time was prolonged. It reached a maximum after 192 to 264 h of standing and then decreased. The maximum pH values were fairly close to those that are calculated from the thermodynamic equation based on carbonate equilibrium.

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Details 詳細情報について

  • CRID
    1390853649614884096
  • NII Article ID
    120001766581
  • NII Book ID
    AA00247166
  • DOI
    10.5109/16137
  • HANDLE
    2324/16137
  • ISSN
    00236152
  • Text Lang
    en
  • Data Source
    • JaLC
    • IRDB
    • Crossref
    • CiNii Articles

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